32" x 30" Cube Core Eggcrate Return Air Filter Grille for 1" Filter 10" Round Duct Pipe + Product Details Size –

+ Product Details Size – 20" x 28" or 28" x 20" is the size for the duct opening measurement only

+ Product Details Size - 8"w X 26"h X 2"d (for duct opening measurement only)

+ Product Details Size - 8"w X 32"h is the size for the duct opening measurement only

Actual Filter Size – 21 3/4"w x 7 3/4" x 1"

these pipes offer easy handling

32" x 30" Cube Core Eggcrate Return Air Filter Grille for 1" Filter 10" Round Duct Pipe + Product Details Size –+ Product Details Perfect Fit & Easy Sizing Designed for a 32" x 30" OR 30" x 32" duct opening (measured at the opening), with actual outer dimensions of 34. 5" W x 32. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 31. 75" x 29. 75" x 1" Premium Airflow Efficiency High performance cube core eggcrate design allows 95% airflow efficiency, reducing energy costs and maximizing HVAC system lifespan. Durable, Rust Free Aluminum